Tweak styling of project home files list.

app/assets/stylesheets/pages/projects.scss

@@ -543,10 +543,6 @@ pre.light-well {
   }
 }
 
-.project-show-files {
-  padding-top: 20px;
-}
-
 .project-show-readme .readme-holder {
-  padding: 7px;
+  border-top: 0;
 }

app/views/projects/_files.html.haml

-= render 'projects/last_push'
-
-.tree-ref-holder
-  = render 'shared/ref_switcher', destination: 'tree', path: @path
+#tree-holder.tree-holder.clearfix
+  .gray-content-block.second-block
+    = render 'projects/tree/tree_header', tree: @tree
 
-- if can? current_user, :download_code, @project
-  .tree-download-holder
-    = render 'projects/repositories/download_archive', ref: @ref, btn_class: 'btn-group pull-right hidden-xs hidden-sm', split_button: true
+  = render 'projects/tree/tree_content', tree: @tree
 
-#tree-holder.tree-holder.clearfix
-  = render "projects/tree/tree", tree: @tree